139159797 has 8 divisors (see below), whose sum is σ = 212053056. Its totient is φ = 79519872.

The previous prime is 139159753. The next prime is 139159829. The reversal of 139159797 is 797951931.

139159797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139159797 - 2¹¹ = 139157749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139159717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3313308 + ... + 3313349.

It is an arithmetic number, because the mean of its divisors is an integer number (26506632).

Almost surely, 2^139159797 is an apocalyptic number.

It is an amenable number.

139159797 is a deficient number, since it is larger than the sum of its proper divisors (72893259).

139159797 is an equidigital number, since it uses as much as digits as its factorization.

139159797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6626667.

The product of its digits is 535815, while the sum is 51.

The square root of 139159797 is about 11796.6010782767. The cubic root of 139159797 is about 518.2085754364.

The spelling of 139159797 in words is "one hundred thirty-nine million, one hundred fifty-nine thousand, seven hundred ninety-seven".